ULSD vs Regular Diesel / Have You Noticed?
This is a question and not a statement... Almost all of the lube oil contamination can be traced back to soot. And in theory more soot is formed when sulfur is present in the fuel. Of course incomp...
Forum Discussion
I have an 07 Ram 3500 with the 6.7L Cummins. When the VIN was checked I was told it was part of the first 300 off the assembly line of the "Clean Diesels".
With the blow by and the emissions the oil would be black in just a few hundred miles. 10 yrs later and a non-functional EGR had the oil much cleaner looking. Did not look like a bunch of soot suspended in the liquid.
Still get thinning due to blow-by of fuel. It is difficult to find where all of this emissions system is actually helping. I say this because when it is 100% operational my fuel economy average is 13.7 mpg average. With EGR unplugged fuel economy goes up by 3.1 mpg.
When it came time to change some of the exhaust pipe I ran a straight pipe from the turbo back. MPG went up to a hand calculated 20.4. I was not very excited about reinstalling the 2 cats, dpf, and plugging the egr back in.
I really wonder if there is any difference in the total amount of harmful emissions in a given set. I look at it this way. If my total harmful emissions with everything in place over 500 miles is significantly less than just running a straight pipe then I am ok with emissions system. But if I burn nearly 50% more fuel in 500 miles with the emissions system and the system only reduces my emission by 25% then I would in actuality be polluting more in 500 miles because I burn more fuel.
With the blow by and the emissions the oil would be black in just a few hundred miles. 10 yrs later and a non-functional EGR had the oil much cleaner looking. Did not look like a bunch of soot suspended in the liquid.
Still get thinning due to blow-by of fuel. It is difficult to find where all of this emissions system is actually helping. I say this because when it is 100% operational my fuel economy average is 13.7 mpg average. With EGR unplugged fuel economy goes up by 3.1 mpg.
When it came time to change some of the exhaust pipe I ran a straight pipe from the turbo back. MPG went up to a hand calculated 20.4. I was not very excited about reinstalling the 2 cats, dpf, and plugging the egr back in.
I really wonder if there is any difference in the total amount of harmful emissions in a given set. I look at it this way. If my total harmful emissions with everything in place over 500 miles is significantly less than just running a straight pipe then I am ok with emissions system. But if I burn nearly 50% more fuel in 500 miles with the emissions system and the system only reduces my emission by 25% then I would in actuality be polluting more in 500 miles because I burn more fuel.
